Printronix P3000 Series How Bit Image Graphics Are Produced

Graphics4–2
73
146
36
255
36
146
73 DECIMAL
VALUES
128
64
32
16
8
4
2
1
DECIMAL
WEIGHTS
7th BIT IMAGE DATA BYTE
2nd BIT IMAGE DATA BYTE
1st BIT IMAGE DATA BYTE
Figure 4–1. Bit Image Pattern Plan
How Bit Image Graphics Are Produced
The binary data byte bit pattern for the ASCII character “A” (hex 41, decimal 65) is pictured in
Figure 4–2.
•If
this data byte is rotated clockwise, the result is a vertical data byte pattern with the MSB at
the top.
•If
each “1” or true bit is plotted, the result is a Bit Image plot of the ASCII character “A.”
MSB
MSB
87654321
8
7
6
5
4
3
2
1
MSB
: Most Significant Bit
Figur e 4–2. V ertical Data Byte Pattern